ALConfederate

You should have 12V when the key is in RUN, and (assuming you have a ballast resistor?) around 9-10V when the key is in START. Dunno about amps; that's what? a 14GA wire, and that won't handle very many amps without melting, even in a 14.4VDC system. ALC

This is on my '78 280Z. I suppose I need to post the car's saga on an intro thread some day soon; it's very...interesting. The wiring is FUBAR thanks to the PO...a cut-and-splice job from Hell. There's wire nuts in place of the fusible links. Anybody ever wanted to track down a PO and choke the living &^%# out of him while screaming, "What were you THINKING, man?" That's about the way I feel right now. Last week, I was working on the car and discovered there was no fire going to the injectors. "Fixed" that problem by jumpering across the plug for the EFI main relay. Fired right up after I did that and ran like a champ. Today I go to play with her and...nothing. So I start digging. Gas...check. Fire to injectors...check. Fire to plugs...ah hah! Nothing there. Set up a plug wire with a screwdriver about 4mm from a ground. Nothing. Did the same thing with the coil wire. Nothing. Checked the coil...primary windings have a resistance of about 2.2 ohms. IIRC, that's about where a coil should be. Put the key on RUN...I have 12V at both terminals on the coil. Is that right? I seem to recall from my younger days working on this type of ignition you should only have 12V on the + side; if you see it on the - side you've got a bad coil. Either that or my jumpering the EFI main burned something out. Anybody have any thoughts on the matter? Dave M.

What's got me concerned is the shape of this thing -- it kinda looks like the front view of a cam lobe, with a broad circular base rising up and tapering to a much smaller rounded point. I've done some looking locally, and the best I've been told is that, no, they don't have it but yes they can make it...and oh by the way the minimum order is $500.00.

Was playing around with the Z a little while ago, and noticed a thin film of fuel oozing out of the top of the fuel pump. Popped off the four screws that hold the volute in place, and immediately noted the little black sealing ring had been crushed flat in a couple of places...more than enough clearance now to give me a small leak. Should I: 1) try and find a replacement seal? 2) place a small bead of sealer there in addition to the ring? 3) just break down and buy a new pump? The MSD 2225 looks like it would work.

Thanks for this thread, y'all. Now I don't have to post saying "help me help me". Don't feel bad...I've had my Z for almost six months and I just now figured out it was a '78. The fella I got it from said '77, the paperwork said '77...but none of the advice for a '77 made any sense. It made for a very interesting time troubleshooting. Has anybody got a source for the EFI main relay? The coil on the one I've got is burned out. I jumpered the plug, so I know the car runs, but I'd really rather have a working relay there.